Arnold willmer



(No Model.)

A. WILLMER. l APPARATUS FOR PRODUGING INTERMITTBNT MUTION. No. 417,966.Patented Deo. 24, 1889.

lillv UNITED STATES PATENT OEEICE.

ARNOLD VILLMER, OF HANOVER, PRUSSIA, GERMANY,`ASSIGNOR TO TI-IE KORTINGGAS ENGINE COMPANY, (LIMITED,) OF NEW YORK, N. "Y.

APPARATUS FOR PRODUCING INTERMITTENT MOTION.

' SPECIFICATION forming partof Letters Patent No. 417,966, datedDecember 24, 1889.

Application filed March 28, 1889. Serial No. 305,114.

(No model.) Patented in France May 14, 1888, No. 196,289, and inSwitzerland May 14, 1888, No. 864.

To all whom it may concern:

Be it known that I, ARNOLD WILLMER, a subject of the King of Prussia,residing at Hanover, in the Kingdom of Prussia, Germany, have inventedcertain new and useful Improvements in Apparatus for ProducingIntermittent Motion, (for which I have ob tained a patent in France,numbered 196,289, and a patent in Switzerland, No. S64, dated ro May 14,1888,) and I do hereby declare the following to be a full, clear, andexact description of the invention, such asvwill enable others skilledin the art to which itappertains to make and use the same.

I5 The object of my invention is to provide a suitable apparatus for theproduction of intermittent motion from the continuous motion of aneccentric or crank.

In the drawings, Figure 1 represents my inzo vention as applied to agas-engine, some of the parts being shown in section. Fig. 2 representsa side View ot' the eccentric-rod and connections, partly in section, online 2 2 of Fig. l. Fig. 3 shows the spring-catch in detail and thevarying positions of the parts in diagram. Fig. 4 shows in detail aportion of the main part of the eccentric-rod with 4the revolving pieceD in a position different from that shown in Fig. 1.

3o I have illustrated my invention as applied to the operation of theexhaust-valve C of a gas-engine. It is desirable and necessary that theexhaust-valve of a gas-engine should not be opened at every revolutionof the enginecrank, but that at certain revolutions it should remainclosed. The valve C is operated by the spring-controlled lever N and itsconnections. The striking of the valve O upon its seat may serve as astop for the motion of the 4o lever N, or there may be a special stop Minis mounted a revolving piece D,which has suitable radial recesses X,alternating wil h proj ec tions Y. This revolving piece D is arranged inthe path of the sliding part of the eccentric-rod, so that the end ofthe said part P may either enter one of the recesses X or abut againstone of the projections Y, according to the adjustment of the revolvingpiece D, as is shown yin Figs. 1 and 4.

The `adjustment of the revolving piece D is 6o controlled by the leveror spring-catch O, Figs. l and 3, which, being pivoted on the standardS, is normallypressed against the stop K by the spring L, and has aprojection II,Which engages the teeth of a sprocket-Wheel F,which isrigidly attached to the shaft or axis of the revolving piece D. j

The Inode of operation of my invention is as follows: The stop M or theconnections between the lever N and the valve O are so ar- 7o rangedthat when the revolving piece D is in the position shown in Fig. l theend ot' the sliding part P of the eccentric-rod projects into one of therecesses X during the lower half of the stroke and is Withdrawntherefrom 7 5 duringthe upper half of thestroke of the eccentric-rod. Inconsequence of this the lever N and valve O reina-in motionless,whilethe part P slides idly Within the part Rot the eccentric-rod. During theupper half of the stroke 8o of the eccentric-rod, however, While the endof the sliding piece P is withdrawn from the recess X and the revolvingpieceV D is therefore left free to turn, the projection H on thespring-controlled lever O engages with the teeth Of the sprocket-wheelF, and on account of the lateral motion of rod R, as shown in Fig. 3,causes it and the revolving piece D to make a fraction of a revolutionfor every stroke of the eccentric-rod- As a result of 9o this, on thenext stroke of the eccentrierod one of the projections Y is in the pathof the sliding part P, as shown in Fig. 4, and consequently during thelower half of that stroke the lever N is pushed down and the valve Oopened. It will therefore be seen that the motion of the valve C can bevaried by varying the construction of the revolving piece D, by varyingthe diameter and number of teeth in the ratchet-wheel F, by varying theposition roo of the stop K,and consequently the amount of time during`which the pin II shall engage the sprocket-wheel F, &c.

It is evident that the eccentric B-might be replaced by a crank, thatthe vibrating lever N might be replaced by a cross-head sliding inguides on the standard S, and that other changes in the details ofconstruction might be lnade without departing from the spirit of myinvention.

Having therefore described my invention, what I claim as new, and desireto protect by Letters Patent, is-

l. In an apparatus for producing intermittent motion, the eccentric-rodmade in two parts, so that one part slides upon the other in thedirection of the length of the rod, a revolving piece which is mountedon the main part of the eccentric-rod, and which has alternate recessesand projections which may be introduced into the path of the slidingpart of the eccentric-rod, together with a springcatch which engageswith the revolving piece during a certain portion of the stroke of theeccentric-rod,and thereby causes the said revolving piece to make afraction of a revolution for every stroke of the eccentric-rod, all incombination, substantially as described.

2. In an apparatus for producing intermittent motion, the eccentric-rodmade in two parts, so that one part slides upon the other in thedirection ot' the length of the rod, a

revolving piece which is mounted on the main part of the eccentric-rod,and which has projections and radial recesses between the projectionsthat may respectively oppose or permit the passage oi the sliding partof the eccentric-rod, a sprocket-wheel mounted on the axis of therevolving Apiece and rigidly connected thereto, and a spring-pressedlever which vibrates in the direction of the stroke of theeccentric-rod, and which has a projecting pin which engages with thesprocketwheel during' a certain portion of the stroke of theeccentric-rod, all in combination, substantially' as described.

3. In an apparatus for producing intermittent motion, the followingparts in combination: a standard, an eccentric mounted on a shaftsupported by said standard, an eccentric-rod made in two parts, so thatone part slides on the main part in the direction of the length of therod, a driven piece connected to the sliding part of the eccentricrodand spring-pressed against a suitable stop on the standard, a revolvingpiece which is mounted on the main part of the eccentric-rod and hasradial recesses into which the sliding part of the eccentric-rod mayenter, together with a spring-catch which is mounted on the standard andengages with the revolving piece during a part of the stroke of theeccentric-rod, whereby the said revolving piece is given a part of arevolution at each stroke of the eccentric-rod, and the sliding part ofthe eccentric-rod alternately abuts against the revolving piece orenters the recesses therein, so as to move the driven piece duringcertain'revolutions of the eccentric and leave it at rest duringlothers, substantially as described.

In testimony whereof Iafx mysignature in presence of two Witnesses.

ARNOLD VVILLMER.

Vitnesses:

WM. G. SPALDING, J oH. KRACKE.

